2009 Acquisition (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended					0 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Nov. 17, 2011	Mar. 31, 2009 MDRNA, Inc.[Member]	Mar. 31, 2009 Nascobal Nasal Spray [Member]
Business Acquisition [Line Items]
Purchase price of the acquisition				$ 412,753	$ 800
Cash paid to acquire rights	$ 34,450	$ 42,200	$ 1,000			$ 54,500